Author Greg Melville’s summer job in Bedford more than 30 years ago eventually lead to the release of his latest book.  Over My Dead Body: Unearthing the Hidden History of America’s Cemeteries focuses on 18 cemeteries in the United States from architectural, political, and literary perspectives. “Before my senior year of college, I worked for the Department of Public Works,” recounted Melville, a 1988 Bedford High School graduate.  “We spent a good part of our time pushing a mower in Shawsheen Cemetery, and occasionally we would help with getting a grave ready. “ “Ever since then, I have had this interest in